Forging machine



s. T. NELSON FORGING MACHINE Filed Dec. 19 1925 Nwmw Q im ww w 5%@ Nw @NN l H lllll ww v Patented Aug. 7, i928.

intatta s sanear svnN T. NnLsON, or MICHIGAN CITY, INDIANA, AssIeNosJ To sULLIvAN MACHINERY Y COMPANY,l A CORPORATION or MASSACHUSETTS.

VE'ORGIN'G MACHINE.

Application filed December 19, 1925. Serial No. 76,538.

Y While this invention relates generally to Y whereby this hole may be reopened which means is particularly adapted to include .as certain of its elements standard commercial mechanisms such as the actuating motor.

The hole forming means constitutes gener-` ally three elements, namely, the hole opening punch, a motor preferably of the pneu- `matic type, andv means actuated by the Amotor for imparting an Impact to the punch both during insertion and withdrawal of the vpunch from the drill steel hole.l A

further Aobject ofthe invention is to provide improved impact means whereby the same is Vcompletely operative from only one end of the actuating motor and to have such Ameans so arranged that impact stressesare `not transmitted through any of the motor mechanism as far as it can possibly be eliminated. A further object is to provide improved means whereby when the punch has completed its hole opening' operation the impact forces may be imparted thereto in a rearwarddirection merely by the reverse Vmovement, of a hand operated feed lever, al-

though it will be clear that any other sort of mechanism could be used for causing the impact forces to be imparted in either direc-.

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

u ln these drawings,-

'Fig 2 is a vertical longitudinalsectional` parallel. guideways 6 within which. are slidA 16 of the punch 17.

ablywmountcd guide portions 7 carried by a motor casing 8. The motor is of a usual reciprocating type having a piston 9 provided with a forwardly projecting piston rod 10 which extends through a usual cylinp der head 11. rIv`he piston is actuated by any suitable power medium which is cont-rolled by any usual type of .valve mechanism. Also slidably guided by the guideways 6 is anvil mechanism for transmitting impacts to a punch and comprises a base plate12 having laterally extending portions 12"L receivable in the guideways 6. A portion 13 projects upwardly from the front end Vof the base 12 and has a Vcylindrical boss 14 prof jecting forwardly therefrom. An openingV l5 provided in the boss receives the shank A collar 19 formed on and adjacent the punch shank 16 is clamped between the boss 14 and a collar 181 the latter having threaded engagement with the boss 14; and as a result, the punch 17 is firmly secured within the 'opening 15. Projecting upwardly from the rear end of the base 12 is an impact portion 20 having a semi-cylin` drical recess 21 while a removable cap 22 is secured to the portion 20 as by screws 23,

this cap Y having a cylindrical recess 22a adapted when mated with the lower recess to form a cylindrical openingthrough which thepiston rod 10 may extend.

To impart animpact to the anvil mechanism by the motor, a hammer element 24 is formed on the outer end of the piston rod 10.

This hammer may be made integral with the piston rod or removably secured thereto in any suitable andA well known 'mannen Means for insuring successive impact blows in one direction upon the punch comprises a hand lever 25 pivotally secured to the frame and having an arm 26 to which is pivotally secured a link 27 in turn connected tothe motor casing in any suitable manner as at 28..

ln the operation of this form of thede- `vice, the steel will irst be clamped, whereupon power flow tothe motor will cause re- `ciprocation 'of the hammer 24 andv by press- Accordingly as long as the hand lever 25 is depressed the hammer 24 will strike only the portion 13. l/Vlien the punch has been driven, the desired distance into the steelthe operator by pulling upwardly on the hand lever and thereby causing reverse movement of the motor casing 8 will cause the hammer 2&1 to strike only the vrear portion 2()V andthereby drive the punch from the hole. In F ig. 3 l have shown the piston l rod provided with tivo hammer` elements 2da n are subjected te the hardest wearwill al Vaiid24". f From the above described structure'itgwill be seen that I have. provided an extremely simple means whereby the Velements which Ways `be open to immediate inspectionand Vcan be replaced in a relatively' sliort'time'as itis only necessary to removethe-upper portion 22 and sliderthe anvil mechanism from the guideways Valso that no impact'stresses are imparted to the punch through' the motor casing or any of its'auniliary devices. Y

WhileI have in this application speciiicaln ly described' one form which my invention may assume in practice, itfwill be understood that this form of the saineis shown for purposes of illustration and that the invarious other forms without departing from its spirit claims.

vent-ion maybe modified and embodied in or the vscopev of the appended What I claim as new 'and desireito secure by Letters Patent is: Y

1. A drill steel punch comprising the combination of afmotoi, anvil mechanism dislposed at one endotsaid motor having a plu-@1 frality of anvil surfaces, a hole forming tool associated with said anvil mechanism, and

means actuated by said motor and movable between said 'anvil surfaces for imparting 4 to the latter blows to Vdrive the tool in op- A posite directions.

2. A drill steel hole-opening mechanismV comprising the combination of a motor, an-V vil mechanism located on only one side of said motor, a hole forming tool having op-V erative'connection with said mechanism, a

l hammer actuated by said inotoigand means whereby saidhammer is adapted'to strike a series of blows on said anvil mechanism in opposite directions, said anvil mechanism including a member having opposed'ham-i nier engaging surfaces between which said hammer ieciprocates.

operating anvil surfaces one of which has aV longitudinal opening through which said` hammer reciproeates and means for causing 6. It is to be noted 'stroke of said piston said hammer is adaptcomprising the combination of a frame hav- 'and cooperatingwithsaid anvil,` and means for'vetfecting' relative movement between said moto-r and anvilat'will tow changethe directionot hammering.

.5. A drill'v 'steel hole opening mechanism comprising the'combination of a motor hav-` ing'a piston and a hammerelement actuated thereby,A a movably vsupported hole opening tool, a movably supported anvil mechanism associated with said tool and having opposed anvilsurfaces located ont-he saine side of thefpiston head andspaced a distance greater than the piston stroke, and means connecting said piston i and anvil whereby said hammer element isdisposed between said surfaces. y f l 6.A drillsteel 'hole opening mechanism comprising the combinationof a motor having areciprocable piston,v a hammer actiia't-` Y ed thereby, and an anvil havingopposed e5 hammer engagingsurfaces between which Vsaid; hammer is positioned,` said Vsurfaces being on the same side ,of'thefpiston head but spaced so Vthat even vduring a maximum ed to engage onlyone of said anvil surfaces {Li} it time. t i Y i" y i ,.V

`7.- A drill steel hole forming mechanism .comprising the combination of a motorhaving a piston rod carrying a hammer element, '105 Van anvil disposedv atonly-,one end ofrsaid motor7 a hole opening tool associated with said anvil, means forimparting na series of blows said hammer 4elemeii'tito said anvil in opposite directions, and vmeans for mov-` 110 `ing said motor and vanvil in only Vone jdirection at a time to insure hammering of said V punch in only one direction ata timerA "8. Y A drill steel hole. forming mechanism ing guideways, a motor slidably mounted therein and having a piston .rod carrying a hammer element at only one end of said -motor7 an anvilfcomprising a substantiallyV U-shaped member also slidably inountediii saidguideways and adapted to be actuated in opposite directions byjsaid hammer ele7 menuand va hole opening tool carried by saidanvil mechaiiis Y 2` 9.-,A'v drill steel hole forming mechanism comprising'the combination of ahole forming tool, a hammering inotor, an Vanvil p mechanism separate `from the hammering motorand disposed only on the side ofthe motor towards the tool and `slidable Atoward izo y or from said motor, said hammering motor and anvil mechanism cooperating to hammer said tool in opposite directions at will, and means for bodily moving said motor to control the direction of the hannnering action.

10. A drill steel'hole opening mechanism comprising a support, a hammering motor carried thereby and comprising a reciprocable hammer element adapted to strike a. series of blows7 a hole opening tool, and an anvil associated with said tool, said anvil being carried by said support so as to receive repeated blows from the hammer elcment of said hammering motor and to move on said support relative to said hammering motor during hammering of said tool, said anvil being disposed only on the side of the motor toward the tool.

In testimony whereof I affix my signature.

SVEN T. NELSON.

CERTIFHCATE 0F CRRECTN.

Patent No. 1,680,254. Granted August 7, 1928, t0

SVEN T. NELSON.

It is hereby eerified that error appears in the printed specification of the above numbered paient requiring correction as follows: Page 1, beween lines 42 and 43, insert the werds "Fig 1 is e pian view"; and inni the said Letters Patent should be fend with ibis correctien therein that he same may conform t0 the record of the case in the Patent Office.

Signed and sealed this 25th day of Sepember, A. D. 1928.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

